A ring-shaped capsule of an intraocular lens

Abstract

This invention discloses an annular capsular bag for an intraocular lens (IOL), comprising a capsular body with a mitigation structure and a heparin coating. An IOL is implanted within this capsular body, and the IOL has a strip-shaped cap made of acrylic ester around its periphery. This invention uses the mitigation structure to block epithelial cells, preventing them from migrating towards the center of the IOL via the anterior and posterior surfaces, thus avoiding opacity in the central portion of the IOL and preventing vision loss, i.e., preventing secondary cataracts. Furthermore, the strip-shaped cap on the periphery of the IOL eliminates the need for additional fixation structures, simplifying the structure, reducing surgical steps, and accelerating the surgical process. Additionally, the heparin coating on the inner surface of the capsular body reduces the adhesion of the epithelial cells at the equatorial region of the annular capsular bag to the surface of the IOL, making them less prone to adhesion and facilitating subsequent IOL replacement.

Description

Technical Field

[0001] This invention relates to the technical field of intraocular lenses, and in particular to an annular capsule for an intraocular lens. Background Technology

[0002] The current treatment for cataracts involves surgically implanting an artificial lens into the body's own circular capsule to improve the patient's vision.

[0003] However, because the epithelial cells at the equator of the circular capsule have the ability to proliferate, they will continue to proliferate and differentiate over time after cataract surgery, forming fibroblasts that migrate to the posterior and anterior capsules of the lens, causing the anterior and posterior surfaces of the artificial lens to become opaque, leading to decreased vision. This condition is clinically known as posterior cataract.

[0004] In addition, many children need to have their artificial lenses replaced because the power of the implanted artificial lens does not match the development of their eyeballs. However, because the artificial lens is tightly adhered to the lens capsule of the human eye, it is often impossible to replace the artificial lens.

[0005] In view of this, the inventors, in response to the numerous shortcomings and inconveniences caused by the imperfections in the aforementioned intraocular lens surgery process, have deeply conceived, actively researched, and actively tested improvements to develop and design this invention. Summary of the Invention

[0006] This invention provides an annular capsule for intraocular lenses, the purpose of which is to prevent the occurrence of posterior cataracts. Another objective is to facilitate intraocular lens replacement.

[0007] To achieve the above objectives, the solution of the present invention is:

[0008] An annular capsule for an intraocular lens includes a capsule body; the annular blocking structure is provided at the middle of the front end and the middle of the rear end of the outer surface of the capsule body.

[0009] An artificial lens is implanted within the capsule body. The outer periphery of the artificial lens is provided with at least one pair of acrylic strips. The two strips are arranged opposite each other. One end of the strip is fixed to the artificial lens, and the other end rests against the inner wall of the capsule body.

[0010] The inner surface of the sac body is coated with heparin.

[0011] The blocking structure is inclined toward the outside of the bag body.

[0012] One end of the blocking structure is fixed to the bag body, and the other end is wavy.

[0013] The displacement structure is integrally formed with the bladder body.

[0014] The blocking structure is annular.

[0015] The bladder body is made of acrylate or silicone gel.

[0016] By adopting the above solution, the present invention, through the provision of a ring-shaped obstruction structure, forms a barrier to the migration of epithelial cells that require planar assistance, so that the epithelial cells cannot migrate towards the center by relying on the anterior and posterior surfaces of the artificial lens, thereby preventing the central part of the artificial lens from becoming opaque and causing vision loss, that is, preventing the occurrence of posterior cataracts.

[0017] Furthermore, by providing strip-shaped supports on the outer periphery of the intraocular lens and a heparin coating on the inner surface of the capsule body, the present invention allows the intraocular lens to rest against the inner wall of the capsule body via the two strip-shaped supports. Therefore, the intraocular lens of the present invention does not require an additional fixation structure, thereby simplifying the structure of the present invention, reducing surgical steps, and accelerating the surgical process. In addition, by providing a heparin coating on the inner surface of the capsule body, the present invention reduces the viscosity of the epithelial cells at the equatorial part of the annular capsule adhering to the surface of the intraocular lens, making them less prone to adhesion, which is beneficial for the replacement of the intraocular lens in the second stage.

[0018] Furthermore, the capsule body of this invention, made of acrylate, has good biocompatibility, making the annular capsule of this invention safe and without causing side effects to the eye. It is also elastic, meaning the capsule body can be folded and then automatically unfolds back to its original shape, with stable strength after unfolding. Therefore, during surgery, the capsule body can be folded to reduce the volume of the annular capsule, thereby reducing the incision required for implantation into the eye, creating a minimally invasive procedure that facilitates postoperative recovery. Moreover, the expanded volume of the capsule body allows it to be embedded within the patient's own annular capsule, eliminating the need for additional fixation during implantation. Attached Figure Description

[0019] Figure 1 This is a front view of a preferred embodiment of the present invention;

[0020] Figure 2 This is a side view of a preferred embodiment of the present invention;

[0021] Figure 3 This is a front view of the pouch body in a preferred embodiment of the present invention;

[0022] Figure 4 This is a side view of the pouch body in a preferred embodiment of the present invention. Detailed Implementation

[0023] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0024] like Figures 1 to 4 As shown, this is a preferred embodiment of an annular capsular bag for an intraocular lens according to the present invention, which includes a capsular bag body 1; an intraocular lens 2 is implanted in the capsular bag body 1; and annular blocking structures 11 are provided at the middle of the front end and the middle of the rear end of the outer surface of the capsular bag body 1.

[0025] In the treatment of cataracts, the annular capsular bag of this invention is used in conjunction with the intraocular lens 2 during surgery. During the surgery, the intraocular lens 2 is first implanted into the capsular bag body 1, and then the capsular bag body 1 is implanted into the patient's own annular capsular bag. As time goes by after the surgery, because the epithelial cells in the equatorial part of the annular capsular bag have the ability to proliferate, they will continue to proliferate and differentiate to form fibroblasts, and migrate towards the center by relying on the anterior and posterior surfaces of the intraocular lens 2. However, this invention, by providing an annular obstruction structure 11, forms a barrier to the migration of epithelial cells that require planar assistance, so that the epithelial cells cannot migrate towards the center by relying on the anterior and posterior surfaces of the intraocular lens 2, thereby avoiding the central part of the intraocular lens 2 from becoming opaque and causing vision loss, that is, avoiding the occurrence of secondary cataracts.

[0026] The aforementioned obstruction structure 11 is inclined toward the outer side of the capsule body 1. This creates a folded structure on the capsule body 1, further removing the plane required for epithelial cell migration, thereby effectively preventing epithelial cells from migrating to the posterior and anterior capsules of the intraocular lens 2.

[0027] One end of the aforementioned obstruction structure 11 is fixed to the pouch body 1, and the other end is wavy. The obstruction structure 11 of the present invention, by having a wavy end, forms a clear boundary, which is beneficial for observing the epithelial cell migration effect after surgery.

[0028] The aforementioned blocking structure 11 is integrally formed with the pouch body 1. This makes the connection between the blocking structure 11 and the pouch body 1 more robust and stable.

[0029] The aforementioned blocking structure 11 is annular in shape. It is used to adapt to the circular intraocular lens 2 and the characteristics of intraocular optical imaging.

[0030] The aforementioned capsule body 1 is made of acrylate or silicone gel. The capsule body 1 made of acrylate or silicone gel has good biocompatibility, giving the annular capsule of this invention a safety advantage and preventing side effects on the eye. Furthermore, it is elastic; the capsule body 1 can be folded and then automatically unfolds back to its original shape, with stable strength after unfolding. Therefore, during surgery, the capsule body 1 can be folded to reduce the volume of the annular capsule, thereby reducing the incision required for implantation into the eye, creating a minimally invasive procedure that facilitates postoperative recovery. Moreover, the expanded volume of the capsule body 1 allows it to be embedded within the patient's own annular capsule, thus eliminating the need for additional fixation during implantation.

[0031] The outer periphery of the aforementioned artificial lens 2 is provided with at least one pair of strip-shaped caps 21 made of acrylic ester. The two caps 21 in the pair are arranged opposite each other, with one end of the strip-shaped caps 21 fixed to the artificial lens 2 and the other end abutting against the inner wall of the capsule body 1. The strip-shaped capsule 21, made of acrylate, has good biocompatibility, giving the annular capsule of this invention a safety advantage and preventing side effects on the eye. Furthermore, it is elastic; the capsule body 1 can be folded and then automatically unfolds back to its original shape, with stable strength after unfolding. Therefore, when implanting the intraocular lens 2 into the capsule body 1, the strip-shaped capsule 21 can be folded first to reduce the volume of the intraocular lens 2, thereby reducing the incision required for implantation. After implantation into the capsule body 1, the paired two capsules 21 automatically unfold, with an unfolded length greater than the inner diameter of the capsule body 1. This allows the intraocular lens 2 to rest against the inner wall of the capsule body 1 via the two capsules 21. Therefore, the intraocular lens 2 of this invention does not require an additional fixation structure, simplifying the structure of this invention, reducing surgical steps, and accelerating the surgical process.

[0032] The inner surface of the aforementioned capsule body 1 is provided with a heparin coating 12. Heparin has the functions of anticoagulation and preventing adhesion. By providing a heparin coating 12 on the inner surface of the capsule body 1, the viscosity of the epithelial cells of the annular capsule equatorial part attached to the surface of the intraocular lens 2 is reduced, making it less likely for the two to adhere, thereby facilitating the replacement of the intraocular lens 2 in the second stage.

[0033] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A ring-shaped capsule for an intraocular lens, characterized in that: It includes a pouch body; the front and rear middle parts of the outer surface of the pouch body are provided with annular blocking structures; The inner surface of the bag body is coated with heparin. The blocking structure is inclined toward the outside of the bag body; one end of the blocking structure is fixed to the bag body.

2. The annular capsule of an intraocular lens as described in claim 1, characterized in that: An artificial lens is implanted within the capsule body. The outer periphery of the artificial lens is provided with at least one pair of acrylic strips. The two strips are arranged opposite each other. One end of the strip is fixed to the artificial lens, and the other end rests against the inner wall of the capsule body.

3. The annular capsule of an intraocular lens as described in claim 1, characterized in that: The other end of the blocking structure is wavy.

4. The annular capsule of an intraocular lens as described in claim 1, characterized in that: The displacement structure is integrally formed with the bladder body.

5. The annular capsule of an intraocular lens as described in claim 1, characterized in that: The blocking structure is annular.

6. The annular capsule of an intraocular lens as described in claim 1, characterized in that: The bladder body is made of acrylate or silicone gel.

Images